linux-stable.git/net/mac80211/debugfs_netdev.c, branch linux-3.18.y

mac80211: clear subdir_stations when removing debugfs

2015-08-27T17:25:43+00:00

[ Upstream commit 4479004e6409087d1b4986881dc98c6c15dffb28 ]

If we don't do this, and we then fail to recreate the debugfs
directory during a mode change, then we will fail later trying
to add stations to this now bogus directory:

BUG: unable to handle kernel NULL pointer dereference at 0000006c
IP: [] mutex_lock+0x12/0x30
Call Trace:
[] start_creating+0x44/0xc0
[] debugfs_create_dir+0x13/0xf0
[] ieee80211_sta_debugfs_add+0x6e/0x490 [mac80211]

Cc: stable@kernel.org
Signed-off-by: Tom Hughes 
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin

mac80211: replace SMPS hw flags with wiphy feature bits

2014-09-11T11:37:02+00:00

Use the new static_smps / dynamic_smps feature bits
instead of mac80211-internal hw flags.

Signed-off-by: Eliad Peller 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: don't check netdev state for debugfs read/write

2014-05-28T14:22:48+00:00

Doing so will lead to an oops for a p2p-dev interface, since it has
no netdev.

Cc: stable@vger.kernel.org
Signed-off-by: Arik Nemtsov 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: add beacon_loss debugfs file

2014-02-11T11:58:45+00:00

Add beacon_loss debugfs file that emulates
ieee80211_beacon_loss call from the driver.

This can be used for various testing scenarios.

Signed-off-by: Eliad Peller 
Signed-off-by: Johannes Berg

mac80211: sync dtim_count to TSF

2014-01-06T19:10:47+00:00

On starting a mesh or AP BSS, the interface dtim_count
countdown should match that of the driver TSF.

Signed-off-by: Thomas Pedersen 
Signed-off-by: Johannes Berg

mac80211: clean up netdev debugfs macros a bit

2014-01-06T14:47:15+00:00

Clean up the file macros a bit and use that to remove the
unnecessary format function for the tkip MIC test file
that really is write-only.

Signed-off-by: Johannes Berg

mac80211: implement SMPS for AP

2013-10-28T14:05:11+00:00

When the driver requests to move to STATIC or DYNAMIC SMPS,
we send an action frame to each associated station and
reconfigure the channel context / driver.
Of course, non-MIMO stations are ignored.

The beacon isn't updated. The association response will
include the original capabilities. Stations that associate
while in non-OFF SMPS mode will get an action frame right
after association to inform them about our current state.
Note that we wait until the end of the EAPOL. Sending an
action frame before the EAPOL is finished can be an issue
for a few clients. Clients aren't likely to send EAPOL
frames in MIMO anyway.

When the SMPS configuration gets more permissive (e.g.
STATIC -> OFF), we don't wake up stations that are asleep
We remember that they don't know about the change and send
the action frame when they wake up.

When the SMPS configuration gets more restrictive (e.g.
OFF -> STATIC), we set the TIM bit for every sleeping STA.
uAPSD stations might send MIMO until they poll the action
frame, but this is for a short period of time.

Signed-off-by: Emmanuel Grumbach 
[fix vht streams loop, initialisation]
Signed-off-by: Johannes Berg

cfg80211/mac80211: use cfg80211 wdev mutex in mac80211

2013-05-24T22:02:16+00:00

Using separate locks in cfg80211 and mac80211 has always
caused issues, for example having to unlock in places in
mac80211 to call cfg80211, which even needed a framework
to make cfg80211 calls after some functions returned etc.

Additionally, I suspect some issues people have reported
with the cfg80211 state getting confused could be due to
such issues, when cfg80211 is asking mac80211 to change
state but mac80211 is in the process of telling cfg80211
that the state changed (in another way.)

Signed-off-by: Johannes Berg

mac80211: Move mesh estab_plinks outside mesh_stats debug group

2013-05-24T21:18:42+00:00

As estab_plinks is not a statistics member, don't show its debug information
along with other mesh stat members

Signed-off-by: Ashok Nagarajan 
Signed-off-by: Johannes Berg

mac80211: add beacon stats to debugfs

2013-04-08T07:16:54+00:00

Beacon-timeout and number of beacon loss events.

Signed-off-by: Ben Greear 
Signed-off-by: Johannes Berg